我有两种方法:
public static Ticket issueTicket(User user,Service service,String[] seats) {
Session ticSess= DB.factory.openSession();
ticSess.beginTransaction();
Date d= new Date();
Ticket ticket=new Ticket(d, service, user);
ticSess.save(ticket);
ticSess.getTransaction().commit();
int seatCount=seats.length;
for (int i=0;i<seatCount;i++){
int seatID=Integer.parseInt(seats[i]);
Seat seat=getSeatByID(seatID);
seat.setTicket(ticket);
ticSess.update(seat);
}
return ticket;
}
和,
public static Seat getSeatByID(int seatID) {
Session proSess = DB.factory.openSession();
proSess.beginTransaction();
Seat c = (Seat) (proSess.load(Seat.class, seatID));
proSess.getTransaction().commit();
return c;
}
当我调用 issueTicket 方法时,我得到:
illegally attempted to associate a proxy with two open Sessions
如果我在 getSeatByID 方法中关闭会话,则会出现另一个错误,告知会话已关闭。这是堆栈跟踪:
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:164)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:285)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:185)
at ir.ac.shirazu.cse.Terminal.Seat_$$_javassist_9.setTicket(Seat_$$_javassist_9.java)
at ir.ac.shirazu.cse.Database.DB.issueTicket(DB.java:231)